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Finding the Fourth Proportional to 313,515.34, 432,654.34 and 170,278.18

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Solution

The fourth proportional to 313,515.34, 432,654.34 and 170,278.18 is: 234,985.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,515.34 : 432,654.34 = 170,278.18 : x
  2. Step 2: Convert to fraction form
    313,515.34/432,654.34 = 170,278.18/x
  3. Step 3: Cross multiply
    313,515.34x = 432,654.34 × 170,278.18
  4. Step 4: Simplify right side
    313,515.34x = 73,671,593,584.30
  5. Step 5: Solve for x
    x = 73,671,593,584.30/313,515.34
  6. Step 6: Final answer
    x = 234,985.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.